Can I use the motion detection of the ONVIF cameras and have pictures sent to me?

Yes, this is possible.
Simply create a routine and select the event Motion. Use the camera as the source.
At THEN select Notification and click that you want to receive an email with pictures.
You will receive an email with 5 pictures every time the camera detects motion.

💡 Tip
You can add a time period as a condition so that you don't receive emails with pictures of yourself all day. For example, only between 11 pm and 6 am.